Channels

Services

.NET ORM Dapper released as open source

Dapper, a simple SQL object relational mapper (ORM) for SQL Server and .NET, has been released as open source. It allows a developer to execute a query and map the results to either a strongly typed list or a list of dynamic objects. Dapper is designed to be almost as fast as hand-tuned code using SqlDataReader and benchmarks within milliseconds of that goal.

Sam Saffron, a hacker at developer Q&A site Stack Overflow, announced the open sourcing of Dapper on Twitter. Stack Overflow now use Dapper in their production systems. In a previous blog posting, Saffron explained that the Stack Overflow developers created Dapper in response to the load that Google's web-spidering processes put upon the site. Because the site changes rapidly as users ask and answer questions, Google's web spider can process ten pages a second.